A lot of it is dumb luck on my part, but I really do try to estimate "landing times" so to speak for the RR shipments so that the flow works as smoothly as possible around trips, etc. It's worked well so far, but I'm sure at some point there will be snags. The scheduling relies on people turning the shipments around quickly and I've been fortunate that everyone has done a great job with them, in some cases being almost impossibly quick with the turnarounds.
Have a safe trip,
Jim